Title:
Air Entrainment in Cement and Silica Pastes
Author(s):
G. M. Bruere
Publication:
Journal Proceedings
Volume:
51
Issue:
5
Appears on pages(s):
905-919
Keywords:
no keywords
DOI:
10.14359/11724
Date:
5/1/1955
Abstract:
The air-entraining capacities of a number of surface-active agents in cement and silica pastes were measured by a standard test procedure. In addition, measurements were made of the foaming properties of surface-active agent solutions with and without electrolyte additions, and of the abilities of surface-active agents to make cement and silica particles hydrophobic by adsorption so that air bubbles adhere to them. These sets of data were used to demon-strate the conditions governing the formation of stable, air-entrained pastes containing surface-active agents, and the mechanisms by which air bubbles are introduced into and retained in pastes.